Author Description

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt:...the second thoracic segment has three spines on the anterior portion, one in the median line and one on either side of it, four spines on the posterior portion, two on either side of the median line, and three lateral spines; the third thoracic segment has two spines on the anterior portion, one on either side of the median line, four spines on the posterior portion, two on either side of the median line, and four lateral spines; the fourth segment has two spines on the anterior part, one on either side of the median line, four spines on the posterior part, two on either side of the median line, and four lateral. / spines; the fifth segment has two spines widely separated, one on either side of the median line, and one lateral spine; the sixth and seventh segments have six spines, three on either side of the median line, and one lateral spine. The first two abdominal segments have each eight small spines, four on either side of the median line. The terminal segment has one median row of spines and a row on either side of this and a lateral row. The median row consists of five small spines and one large terminal spine. The dorsal row on either side of the median row each consists of four spines. The outer marginal lateral rows each consists of three spines, a pair at the base, a pair about the middle, and a pair at the extremity. At the base of the segment is a transverse row of four small spines. The opercular valves have each a longitudinal row of eight spines. Both the anterior and the posterior pairs of legs are covered with spines, the anterior ones more densely. Two specimens, one imperfect, were obtained by the U. S. Bureau of Fisheries steamer Albatross at Fernandina, Florida. Type.--Cat. No. 11522, U.S.N.M. ARCTURUS BAFFINI...